Which hosts does the tapeworm Diphyllobothrium latum require to complete its lifecycle?

A) cows and humans
B) ants, sheep, and mammals
C) snails, chickens, and mammals
D) crustaceans, fish, and mammals
E) pigs and mammals


Answer: D

Biology & Microbiology

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What types of cells produce antibodies?

a. T helper cells b. cytotoxic T cells c. plasma cells d. memory B cells

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The growth hormone is

a. prolactin. b. adrenalin. c. thyroxine. d. ACTH. e. somatotropin.

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For monohybrid experiments, a testcross could result in which of the following ratios?

a. 1:1 b. 2:1 c. 9:3:3:1 d. 1:2:1 e. 3:1

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The transfer of heat from arteries that carry warm blood past veins that carry cooler blood is an example of

A) insulation. B) countercurrent heat exchange. C) evaporative cooling. D) behavioral thermoregulation.

Biology & Microbiology